- China weaponizing the world's dependence on rare earth
- The US weaponizing the world's dependence on SWIFT
- Russia weaponizing Europe's dependence on natural gas
- Iran weaponizing the the world's dependence of oil supply through strait of Hormuz
China could have the monopoly of rare earth production and refinery for all of eternity. But because of their reaction towards all the us allies when the us increased tariffs, I don't expect them to be relevant enough to disrupt markets with rare earths sanctions in 10-20 years.
... Except when they can't in any meaningful span of time.